Catalysts and method of their preparation
    31.
    发明授权
    Catalysts and method of their preparation 失效
    催化剂及其制备方法

    公开(公告)号:US4094821A

    公开(公告)日:1978-06-13

    申请号:US729834

    申请日:1976-10-04

    CPC分类号: B01J23/58 B01J23/78 C10G35/09

    摘要: The instant invention relates to a novel catalyst which comprises a physical mixture of (1) at least one catalytically active transition metal selected from Group VIII of the Periodic Table of the Elements in combination with at least one alkaline earth metal oxide, and (2) an acidic refractory oxide. The combination of one or more of said Group VIII metals and one or more alkaline earth metal oxides may be provided by supporting said metals and said oxides on a nonacidic refractory oxide support. These catalysts are useful in hydrocarbon conversion processes and are characterized as having improved stability under oxidizing conditions, for example, the high temperature oxidation treatments encountered in regenerating deactivated reforming catalysts.

    摘要翻译: 本发明涉及一种新型催化剂,其包含(1)至少一种选自元素周期表第Ⅷ族的至少一种催化活性过渡金属与至少一种碱土金属氧化物的物理混合物,和(2) 酸性难熔氧化物。 所述VIII族金属和一种或多种碱土金属氧化物中的一种或多种的组合可以通过将非金属难熔氧化物载体上的所述金属和所述氧化物负载来提供。 这些催化剂可用于烃转化方法,其特征在于在氧化条件下具有改进的稳定性,例如在再生失活重整催化剂中遇到的高温氧化处理。

    Staged-acidity reforming (C-2705)
    37.
    发明授权
    Staged-acidity reforming (C-2705) 失效
    分阶段酸度改性(C-2705)

    公开(公告)号:US5292427A

    公开(公告)日:1994-03-08

    申请号:US992230

    申请日:1992-12-17

    CPC分类号: C10G59/02

    摘要: Staged-Acidity Naphtha Reforming provides increased C.sub.5+ liquid yields by systematically adjusting catalyst acidity within a multireactor reformer to match the different acid strengths required to selectively aromatize naphthene and paraffin hydrocarbon as they traverse the reformer train.

    摘要翻译: 分级酸度石脑油重整通过系统地调节多重反应器重整器中的催化剂酸度来提供提高的C5 +液体产率,以匹配在环烷烃和链烷烃穿过重整器列车时选择性芳构化所需的不同酸强度。

    Noble metal on rare earth modified silica alumina as hydrocarbon
conversion catalyst
    39.
    发明授权
    Noble metal on rare earth modified silica alumina as hydrocarbon conversion catalyst 失效
    贵金属稀土改性二氧化硅作为烃转化催化剂

    公开(公告)号:US5208200A

    公开(公告)日:1993-05-04

    申请号:US842863

    申请日:1992-02-27

    摘要: Rare earth oxides, such as Nd.sub.2 O.sub.3 disperse onto the surface of SiO.sub.2 /Al.sub.2 O.sub.3 and act as weakly basic titrants. This lowers the acidity of SiO.sub.2 /Al.sub.2 O.sub.3 to close to that of chlorided alumina, as shown by model compound reaction tests. This support also disperses a noble metal such as Pt much better than undoped SiO.sub.2 /Al.sub.2 O.sub.3 and similar to chlorided alumina. Platinum on the rare earth modified silica alumina can function as a hydrocarbon conversion catalyst in reactions where Pt/chlorided Al.sub.2 O.sub.3 is used, such as in reforming, and isomerization, especially wax isomerization.

    摘要翻译: 稀土氧化物如Nd2O3分散在SiO2 / Al2O3表面,作为弱碱性滴定剂。 这样可以将SiO 2 / Al 2 O 3的酸度降低到氯化矾土的酸度,如模型化合物反应试验所示。 该载体还分散Pt等贵金属比未掺杂的SiO 2 / Al 2 O 3更好,并且类似于氯化氧化铝。 在稀土改性二氧化硅氧化铝上的铂可以在使用Pt /氯化Al 2 O 3的反应中起到烃转化催化剂的作用,如重整和异构化,特别是蜡异构化。

    Heteronuclear noble metal cluster catalysts
    40.
    发明授权
    Heteronuclear noble metal cluster catalysts 失效
    异核贵金属簇催化剂

    公开(公告)号:US4302400A

    公开(公告)日:1981-11-24

    申请号:US147064

    申请日:1980-05-05

    申请人: Gary B. McVicker

    发明人: Gary B. McVicker

    摘要: New heteronuclear noble metal cluster complexes have been discovered and synthesized for the first time. These complexes are (pyridine).sub.2 Pt[Ir.sub.6 (CO).sub.15 ], (pyridine).sub.2 -Pt[Ir.sub.2 (CO).sub.7 ], (pyridine).sub.3 Pt[Ru.sub.3 (CO).sub.12 ], ((C.sub.6 H.sub.5).sub.3 P).sub.2 -Pt[Ir(CO).sub.3 P (C.sub.6 H.sub.5).sub.3 ].sub.2, ((C.sub.6 H.sub.5).sub.3 P).sub.2 Rh(CO)[Ir(CO).sub.4 ], and (pyridine).sub.2 Pt[Rh(CO).sub.2 (P(C.sub.6 H.sub.5).sub.3).sub.2 ].sub.2.These new heteronuclear noble metal cluster complexes are useful as supported mixed noble metal catalyst precursors. These new cluster complexes, of known stoichiometry, are deposited on anhydrous refractory inorganic oxide or carbon supports and then reduced resulting in the formation of a supported heteronuclear noble metal catalyst having the same metals stoichiometry as the starting cluster complexes. In this way, precise control can be exercised over the ratio and distribution of multiple metal components in a mixed noble metal catalyst. The usage of preformed heteronuclear noble metal cluster complexes as supported mixed metal catalyst precursors maximizes surface alloy formation and also yields unique mixed-metal cluster structures on the support surface.

    摘要翻译: 首次发现并合成了新的异核贵金属簇络合物。 这些配合物是(吡啶)2 Pt [Ir 6(CO)15],(吡啶)2-Pt [Ir 2(CO)7],(吡啶)3 Pt [Ru 3(CO)12],((C 6 H 5)3 P)2 -Pt [Ir(CO)3P(C6H5)3] 2,((C6H5)3P)2Rh(CO)[Ir(CO)4]和(吡啶)2 Pt [Rh(CO) 3)2] 2。 这些新的异核贵金属簇络合物可用作负载型混合贵金属催化剂前体。 这些具有已知化学计量的新的簇络合物沉积在无水耐火无机氧化物或碳载体上,然后还原,形成具有与起始簇络合物相同的金属化学计量的负载的异核贵金属催化剂。 以这种方式,可以对混合贵金属催化剂中多种金属组分的比例和分布进行精确控制。 使用预制的异核贵金属簇络合物作为负载混合金属催化剂前体使表面合金形成最大化,并在支撑表面上产生独特的混合金属簇结构。